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Many speed limits are set by the State of Indiana and unless they are overridden by local ordinances, those speed limits are in effect on our county roadways.

To see a list of Indiana speed limit laws click on the following link:

IN Speed Limit Ordinances.

Urban speed limits are set by the Indiana Government. Below are the special codes for Urban areas.

IC 9-13-2-193

Urban District

    Sec. 193 "Urban district" means the territory contiguous to and including any street that is built up with structures devoted to business, industry, or dwelling houses situated at intervals of less than two hundred (200) feet for a distance of at least one-fourth (1/4) mile.

As added by P.L.2-1991, SEC. 1.

IC 9-21-5-2

Maximum speed limits

    Sec. 2. Except when a special hazard exists that requires lower speed for compliance with section 1 of this chapter, the slower speed limit specified in this section or established as authorized by section 3 of this chapter is the maximum lawful speed. A person may not drive a vehicle on a highway at a speed in excess of the following maximum limits:

        1) Thirty (30) miles per hour in an urban district.

        2) Fifty-five (55) miles per hour, except as provided in subdivisions (1), (3), and (4).

        3) Sixty-five (65) miles per hour, on a highway on the national system of interstate and  defense highways located outside of an urbanized area (as defined in 23 U.S.C. 101)with a population of at least fifty thousand (50,000), except as provided in subdivision (4).

        4) Sixty (60) miles per hour for a vehicle (other than a bus) having a declared gross weight greater than twenty-six thousand (26,000) pounds on a highway on the national system of interstate and defense highways located outside an urbanized area (as defined in 23 U.S. C. 101) with a population of at least fifty thousand (50,000).

        (5) Fifteen (15) miles per hour in an alley.

As added by P.L. 2-1991, SEC. 9, Amended by P.L. 92-1991-, SEC. 2; P.L. 1-1993, SEC. 56.

IC 9-21-5-6
Speed limits greater or lesser than reasonable; alteration by local authority; engineering and traffic investigations; validity of speed limits; conditions
    
Sec. 6. (a) Except as provided in subsection (e), whenever a local authority in the authority's jurisdiction determines on the basis of an engineering and traffic investigation that the maximum speed permitted under this chapter is greater or less than reasonable and safe under the conditions found to exist on a highway or part of a highway, the local authority may determine and declare a reasonable and safe maximum limit on the highway. The maximum limit declared under this section may do any of the following:
        (1) Decrease the limit within urban districts, but not to less than twenty (20) miles per hour.
        (2) Increase the limit within an urban district, but not to more than fifty-five (55) miles per hour during daytime and fifty (50) miles per hour during nighttime.
        (3) Decrease the limit outside an urban district, but not to less than thirty (30) miles per hour.
        (4) Decrease the limit in an alley, but to not less than five (5) miles per hour.
        (5) Increase the limit in an alley, but to not more than thirty (30) miles per hour.
    (b) A local authority in the authority's jurisdiction shall determine by an engineering and traffic investigation the proper maximum speed for all local streets and shall declare a reasonable and safe maximum speed permitted under this chapter for an urban district.
    (c) An altered limit established under this section is effective at all times or during hours of darkness or at other times as may be determined when appropriate signs giving notice of the altered limit are erected on the street or highway.
    (d) Except as provided in this subsection, a local authority may not alter a speed limit on a highway or extension of a highway in the state highway system. A city or town may establish speed limits on state highways upon which a school is located. However, a speed limit established under this subsection is valid only if the following conditions exist:
        (1) The limit is not less than twenty (20) miles per hour.
        (2) The limit is imposed only in the immediate vicinity of the school.
        (3) Children are present.
        (4) The speed zone is properly signed.
        (5) The Indiana department of transportation has been notified of the limit imposed by certified mail.
    (e) A local authority may decrease a limit on a street to not less than fifteen (15) miles per hour if the following conditions exist:
        (1) The street is located within a park or playground established under IC 36-10.
        (2) The:
            (A) board established under IC 36-10-3;
            (B) board established under IC 36-10-4; or
            (C) park authority established under IC 36-10-5;
        requests the local authority to decrease the limit.
        (3) The speed zone is properly signed.
As added by P.L.2-1991, SEC.9. Amended by P.L.92-1991, SEC.3; P.L.1-1992, SEC.50; P.L.126-1993, SEC.1.

IC 9-21-5-7
Reduction of speed; impeding normal and reasonable movement; right-of-way to other vehicles
    
Sec. 7. A person may not drive a motor vehicle at a slow speed that impedes or blocks the normal and reasonable movement of traffic, except when reduced speed is necessary for safe operation or in compliance with the law. A person who is driving at a slow speed so that three (3) or more other vehicles are blocked and cannot pass on the left around the vehicle shall give right-of-way to the other

vehicles by pulling off to the right of the right lane at the earliest reasonable opportunity and allowing the blocked vehicles to pass.
As added by P.L.2-1991, SEC.9.

IC 9-21-5-8
Minimum speed limits
    
Sec. 8. Whenever the Indiana department of transportation within the department's jurisdiction or a local authority within the authority's jurisdiction determines, based on an engineering and traffic investigation, that slow speeds on a part of a highway consistently impede the normal and reasonable movement of traffic, the Indiana department of transportation or local authority may determine and declare a minimum speed limit below which a person may not drive a vehicle except when necessary for safe operation or in compliance with law. A limit determined under this subsection and declared by appropriate resolution, regulation, or ordinance becomes effective when appropriate sign or signals giving notice of the limit of speed are erected along the affected part of a highway.
As added by P.L.2-1991, SEC.9.

IC 9-21-5-8.5
Low speed vehicles
    
Sec. 8.5. A person may not drive a low speed vehicle on a highway that has a speed limit in excess of thirty-five (35) miles per hour.
As added by P.L.21-2003, SEC.8.

IC 9-21-5-9
Vehicles traveling at reduced speeds; use of right lane
    
Sec. 9. A vehicle that travels at a speed less than the established maximum shall travel in the right lanes to provide for better flow of traffic on the interstate highways.
As added by P.L.2-1991, SEC.9.

IC 9-21-5-10
Bridges and elevated structures; maximum speed; safety investigation; posting of signs; violations; conclusive evidence
    
Sec. 10. (a) A person may not drive a vehicle over a bridge or other elevated structure constituting a part of a highway at a speed that is greater than the maximum speed that can be maintained with safety to the bridge or structure, when the structure is signposted as provided in this section.
    (b) The Indiana department of transportation may conduct an investigation of a bridge or other elevated structure constituting a part of a highway. If the Indiana department of transportation finds that the structure cannot with safety to the structure withstand vehicles traveling at the speed otherwise permissible under this chapter, the Indiana department of transportation shall determine and declare the maximum speed of vehicles that the structure can withstand. The Indiana department of transportation shall cause or

permit suitable signs stating the maximum speed to be erected and maintained at a distance of one hundred (100) feet or as near as practicable before each end of the structure.
    (c) Upon the trial of a person charged with a violation of this section, proof of the determination of the maximum speed by the Indiana department of transportation and the existence of signs erected under subsection (b) constitutes conclusive evidence of the maximum speed that can be maintained with safety to the bridge or structure.
As added by P.L.2-1991, SEC.9.

IC 9-21-5-11
Temporary maximum speed limits; worksite speed limits
    
Sec. 11. (a) Subject to subsection (b), the Indiana department of transportation, the transportation finance authority, or a local authority may establish temporary maximum speed limits in their respective jurisdictions and in the vicinity of a worksite without conducting an engineering study and investigation required under this article. The establishing authority shall post signs notifying the traveling public of the temporary maximum speed limits established under this section.
    (b) Worksite speed limits set under this section must be ten (10) miles below the maximum established speed limit. A worksite speed limit may not exceed forty-five (45) miles per hour in any location.
As added by P.L.2-1991, SEC.9. Amended by P.L.116-2001, SEC.1.

IC 9-21-5-12
Maximum speeds greater or less than what is reasonably safe; declaration of new limit; variable limits based on time of day, types of vehicles, weather, and other factors
    
Sec. 12. (a) Whenever the Indiana department of transportation determines on the basis of an engineering and traffic investigation that a maximum speed set forth in this chapter is greater or less than is reasonable or safe under the conditions found to exist at an intersection or other place or on part of the state highway system, the Indiana department of transportation may determine and declare a reasonable and safe maximum limit at the intersection or on the part of the state highway system. The differing limit is effective when appropriate signs giving notice of the limit are erected.
    (b) A maximum speed limit under this section may be declared to be effective at all times or at times indicated on the signs. Differing limits may be established for different times of day, different types of vehicles, varying weather conditions, and other factors bearing on safe speeds. The differing limits are effective when posted on appropriate fixed or variable signs.
As added by P.L.2-1991, SEC.9.

IC 9-21-5-13
Violations; Class C infraction
    
Sec. 13. (a) Except as provided in subsection (b), a person who

violates this chapter commits a Class C infraction.
    (b) A person who exceeds a speed limit that is:
        (1) established under section 6 of this chapter and imposed only in the immediate vicinity of a school when children are present; or
        (2) established under section 11 of this chapter and imposed only in the immediate vicinity of a worksite when workers are present;
commits a Class B infraction.
As added by P.L.2-1991, SEC.9. Amended by P.L.42-2000, SEC.1; P.L.116-2001, SEC.2.

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